Bar-shaped strain gauge balance is a kind of six-dimension force sensor to measure the force and moment of force applied to the aircraft models in the wind tunnel.But its dynamic performance does not meet the dynamic testing requirements because the overshoot of its dynamic response is large and the adjusting time is long.A real-time dynamic compensation system has been developed using DSP chip TMS320F2812.And the dynamic compensation for the six output signal of the strain gauge balance is achieved by this system so as to speed their dynamic responses.